Re: [PATCH 2/2] drm/i915: Silence smatch for cmdparser

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On Fri, Jan 20, 2017 at 09:45:30PM +0000, Chris Wilson wrote:
> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
> 
> If we move the shift into each case not only do we kill the warning from
> smatch, but we shrink the code slightly:
> 
>    text	   data	    bss	    dec	    hex	filename
> 1267906	  20587	   3168	1291661	 13b58d	before
> 1267890	  20587	   3168	1291645	 13b57d	after
> 
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

Any takers for this pair?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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